NiCrSi-NiSiMg(Type N) thermocouple is the latest base metal thermocouple, developed to improve the drawbacks that type K thermocouple has. The main chemical composition of positive leg NiCrSi(NP) is Ni: Cr:Si~84.4:14.2: 1.4; negative leg NiSiMg (NN) is Ni: Si: Mg~95.5: 4.4:0.1. Type N thermocouple also be used in
the similar atmospheres that type K works, and the operating temperature range is -200~1300℃.
Type N thermocouple improves the EMF drift and short term EMF change, compared to type K thermocouple, and has a longer life than type K thermocouple. Therefore, in the industries where temperature control and measurement are especially critical, type N thermocouple has more advantages than other thermocouple as it has long life and stable thermal EMF.
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